Question

find the value of k so that (-1,-1) is a solution of the linear equation 9kx + 12ky = 63. Write the equation of another line passing through the given point

Answer 1

(-1,-1) is the solution of given line
hence ,
put this value in equation ,
=> 9k (-1)+12k (-1)=63

=>-9k -12k=63

=>-21k=63

=> k=-3
hence value of k =-3

another equation which passes through this points are
(y+1)=m (x+1)
y+1=mx+m
y-mx=m-1

y -mx=m-1 is the general equation which passes through (-1,-1)
put m=1
y-x=0 is equation which passes through (-1,-1)